fix(ChatRoomImpl): clear id before sending presence

Author: paweldomas

src/main/java/org/jitsi/impl/protocol/xmpp/ChatRoomImpl.java

@@ -1005,6 +1005,9 @@ public void setPresenceExtension(ExtensionElement extension,
             return;
         }
 
+        // Reset the stanza ID before sending
+        lastPresenceSent.setStanzaId(null);
+
         connection.sendStanza(lastPresenceSent);
     }
 
@@ -1052,6 +1055,9 @@ public void modifyPresence(Collection<ExtensionElement> toRemove,
             return;
         }
 
+        // Reset the stanza ID before sending
+        lastPresenceSent.setStanzaId(null);
+
         connection.sendStanza(lastPresenceSent);
     }